Derailing-block.



Patented August 9, 190a.

PATENT OFFIcE.

MGCLELLAN C. MITCHELL, OF OMAHA, NEBRASKA.

DEHAILING-BLOCK.

SPECIFICATION forming part of Letters Patent N0. 766,960, dated August 9, 1904.

Application filed anuary 8, 1904:. Serial No. 188,198. (No model.)

- skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to a new and novel mechanism used in connection with switches to provide a derailing device, so that when the switch is set in one position a car approaching from one side will be derailed.

In the accompanying drawings I have shown in Figure 1 a broken top view disclosing the arrangement of my derailiug mechanism disclosing the block set. Fig. 2 is a broken detached view showing the pin before being bent in connection with the detailing-block. Fig. 3 shows an end view of the derailingblock. Fig. 4 discloses a broken detail disclosing the derailing-block in position, while Fig. 5 shows an elevation disclosing the derailing-block in position.

In order to provide a railway with a track device so arranged that the same will be automatically swung upon one of the rails when the switch is operated, I provide an ordinary holder 6, as is shown in Fig. 1, with a pin t, to which is secured a bell-crank c, which bellcrank is suitably secured, by means of a pin 3, to a switch-bar 1, secured to the shifting rail B, so that as this shifting rail, which is connected to the bar 2, is operated the bellerank 0 will be actuated to carry the connecting-rod 7 in one direction. This connectingrod 7 works through the holders f, secured to suitable ties a, which ties a support the rail A, upon which the derailing-block is carried.

The connecting-bar 2 is secured to the crank end of an ordinary shaft 9, as is usual in switch construction, which shaft 9 is secured within a suitable stand 12, provided with the cross-bar 13. Above the shaft 9 is provided with the usual lever 10 and handle 11, adapted to work into the notched sector a, as shown.

The connecting-rod 7 is bifurcated, as is shown in Fig. 1, and is provided with the end plate 14:, through which extends the end of the shifting rod 15, provided with the bur 19, as shown, so that this rod 15 may readily shift between the bifurcated end of the connectingrod '7. This shifting rod 15 is provided with a nut 16, and entering between the nut 16 and the plate 14 is a coil-spring 17 to unite these rods 7 and 15 under spring tension.

Secured to two or more suitable ties is the base-plate 27, fastened by means of suitable spikes a, which base-plate has one end recurved, as is shown at g, and within this re curved end is held a pin 28, supporting the slotted bell-crank 26, which by means of a suitable pin is secured to the end 29 of the shifting rod 15, as indicated in Figs. 1 and 5.

Secured to the upwardly-bent portion 34 of the base-plate 27 is the stem 23 of the derailing-block 3, preferably made of sheet-steel, which steinis bent cylindrieally and is adapted to work through the base-plate and intermediate plate 32 and the bracket 31, as shown in Fig. 5. By means of thecollar 30 and a pin 39 the derail'ing-block C is movably secured to the base-plate.

The derailing-block C is provided along one edge with the flange 20, while near the free end is provided the knife-edge 24 and the stop or lip 25, as is shown in the drawings. Extending from the dcrailing-block G is a pin 21, working within the slot Z) of the slotted bellcrank 26, as shown.

Now when the switch is thrown so that a train approaching from theright to be guided upon the rails B, the derailing-block will be thrown over the rail A, so that should atrain or car approach from the left to run into the closed switch the first wheel would encounter the knife-edge 24L of the derailing-block and by means of the flange 20 be thrown to the side to free this car and prevent the same from jumping the closed switch. 011 the other hand, should a train or a car approach from the right while the derailing-block C were thrown across the rail A the wheel in engaging the flange 20 would throw the same back, this movement ofthe block being permitted, as the rod 15 would merely be shifted forward against the tension of the spring 17, permitting the derailing-block readily being shifted out of the Way. These derailingblocks and the entire mechanism are seta suitable distance from the switch-stand, which is preferably in the form of the usual rectangular frame 12, as shown.

Having thus described my said invention, What I claim as new, and desire to secure by United States Letters Patent, is-

In a derailing mechanism of the class described, the combination With a suitable baseplate, of a slotted bell-crank secured to said base-plate, a flange-provided derailing-block pivotally secured to said base-plate, a pin ex- MOOLELLAN C. MITCHELL.

Witnesses:

M. KRECHY, GEO. W. Sons. 

